1. Premium Aluminum Alloy Construction Crafted from high-strength anodized aluminum alloy, these Presta valve stems are lightweight, corrosion-resistant, and built to last. Perfect for tubeless and high-performance bicycle tires, they ensure long-term durability under various riding conditions. 2. Side Three-Hole Design for Better Airflow Features an upgraded three-hole side vent design that improves airs circulation and speeds up inflation and deflation efficiency. This design helps achieve a more stable and secure seal for tubeless tire setups. 3. Universal 44mm Length – Fits Most Bikes The 44mm valve length makes it Applicable to most road bikes, mountain bikes, and gravel bikes. Ideal for both carbon and alloy rims, providing a snug fit and easy access for pumps. 4. Replaceable Valve Core – Easy Maintenance Each set includes a replaceable Presta valve core, allowing you to replace or clean it easily when needed. Keeps your tire system airtight and reliable without the need for complete replacement. 5. Colorful Set of 8 – Stylish and Functional Comes in a set of 8 colorful valves, adding a touch of personality to your bike. The vibrant anodized finish not only enhances appearance but also resists fading and scratching for long-lasting shine. Product Name: Side Three-hole Valve core Color: Black/Red/Gold/Blue Material: Aluminum alloy Type: Tubeless valve New cavity: Ordinary core cavity Assembly method: Screw type Compatible vehicle type: Bicycle Packaging size: 7x9x2mm Overall weight: 30g